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<H2><A NAME="4_6">4.6 Alternatives to streaming back the image</A></H2>
<P> If you like to save the image directly to a file instead of
 streaming it back to the browser then you just have to specify an
 absolute filename in the final call to Graph::Stroke(), i.e.</P>
<P><DIV class="phpscript"><CODE><FONT color="#000000"> <FONT color="#0000BB">
&nbsp;$graph</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">
Stroke</FONT><FONT color="#007700">(</FONT><FONT color="#DD0000">
&quot;/usr/home/peter/images/result2002.png&quot;</FONT><FONT color="#007700">);</FONT><FONT
color="#0000BB"></FONT></FONT></CODE></DIV></P>
<P></P>
<P> Please note that the user running as Apache/PHP must have write
 access to the specified directory.</P>
<P> There are also two predefined filenames which have special meaning.</P>
<UL>
<LI>&quot;auto&quot;, This will create a file in the same directory as the script
 with the same name as the script but with the correct image extension.</LI>
<LI>_IMG_HANDLER, (This is defined in jpgraph.php). Specifying this
 filename will not create a an image to file or stram it back to the
 browser. Instead it will instruct the Stroke() method to just return
 the handle for the GD image. This is useful if you later want to
 manipulate the image in ways that are not yet supported by Jpgraph. For
 example include the image in generated PDF files.
<BR><I> Example:</I><DIV class="phpscript"><CODE><FONT color="#000000"> <FONT
color="#0000BB">&nbsp;$handle&nbsp;</FONT><FONT color="#007700">=&nbsp;</FONT><FONT color="#0000BB">
$graph</FONT><FONT color="#007700">-&gt;</FONT><FONT color="#0000BB">Stroke</FONT><FONT
color="#007700">(</FONT><FONT color="#0000BB">_IMG_HANDLER</FONT><FONT color="#007700">
);</FONT><FONT color="#0000BB"></FONT></FONT></CODE></DIV>
<P></P>
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